Filling carrier transferring mechanism



May 30, 1944. H. H. BURDETT 2,350,308

FILLING CARRIER TRANSFERRING MECHANISM Filed April 9, 1943 FIG. 2 1 10.3

- Y I INVENTOR.

HORACE H- BURDETT ATTORNEY Patented May 30, 1944 Filipino oei gnmnTRANSFERRING MECHANISM.

Horace IL Bu'rdett, Milford, Mass, assignon'to Draper Corporation,'Hop'edalq-Mass a cor- -poratioh of Maine Applicatio Aprils, 1943,Serial n 482,420

6 Claims; (Cl. 1 39 243) The present invention [relates to .fillingreplenis'hin'g looms and, as illustrated herein, relates moreparticularly to means for controlling the operation of mechanism fortransferring successive filling carriers to a shuttle during operationofthe loom.

In automatic looms of the type referred to above, the filling carriersare transferredjfrom the holder or hopper to the shuttle withoutinterrupting the operation of the loom. The transfer operation isperformed as the lay. approaches front center and takes place in a veryshort period of time. Such rapid operation, which is-performed suddenlyand almost instantaneously, necessarily entails considerable strain andshock, particularly in stopping the transfer mechanism at the end of-itstransferring-movement. It has not been-practical to provide a solid stopto limitmovement of the transfer mechanism because of the highspeed ofthe parts.

Stopping of the transfer mechanism has, been effected by the use of atension spring which operates also to return the transfer mechanism toits initial position-andalso operates to rotate the bobbin holdingmechanism to present another bobbin or filling carrier into transferposition. -A very heavy spring has been necessaryin order to stop themechanism at a predetermined desired point. Such a heavy spring,however, is objectionable since it causes undue wear on the parts.

One object of the presentinvention, accord- .ingly, is to provide meansforstopping the transfer mechanism by the use of whichvthe abovementioned objections will be overcome.

In accordance with this object, one feature of the invention comprises atransferrer movable for transferring successive filling carriers from aholder and resilient means arranged to resist movement of thetransferrer only during the latter portion of its transferring movementand forming a stop to limit operating movement of the transferrer. Asillustrated, the stop member comprises a block of resilient material,preferably rubber, which is adjustably secured in position on thetransferrer. This construction is effective and stops the transferrerwithout undue shock and strain on the parts. The construction alsopermits a lighter tension spring to be used and, consequently, wear onthe transferrer parts is substantially reduced.

With the above and other objects and features in view, the inventionwill now be described drawing which illustrates apreferredembodilTlGl'ltthQIGOf and in which:

Fig. 1 is a view in side elevation,lpartly,.in section, showing thetransferqmechanism inoperated position; 7 j

Fig. 2 is a detail view on anenlarged scale" of a'po'rtion of atrans'ferrer having a resilientJadjustable stop applied theretoi and" IFig. 3 is a sectional view takenalong the line III-III of Fig.2. 1

The loom frame Ill-is of usual construction; and is "p'io'videdwitha"hopper'stand vI 2 on which' is mounted a rotatable hopper of, whichonly the butt, end disk I4 is showrnv The disk-1'4 is provided with theusual bobbin seats IB- and a ratchet i8 is fixed to the 'disk 14 in theusual manner. The ratchet ismtatedste EQy-step to move's'uccessivefilling carriers into transferring position. I

,The 't'ra'nsferrer 122 is of usual constructiona'nd is supported for.rocking" movement ona stud 2 l fixed to the hopper stand l2. An arm 26projects downwardly'from'thefhub281of the transferrer 22 and ispivotally connected at its lower end'to'a latch finger 30, the end 32,of which is; arranged, upon transfer or replenishment of filling, toberaised into the pathlof' movement of abunte'r34 carried by the lay 36.'Afee'dpawl o'fusilal construction is carried by the, transferrrona pinllland'op'erates to rotate th'e butt-end disk l4 when the "transferrer22,, is returned to {its initial or inoperative position under theflinfiuence of I the usual torsion spring 42.

When a filling carrier 20 is in transferringposition and substantialexhaustion of the ffillin'g on a carrier in the shuttle 43 has'beenindicated by suitable feeling mechanism, the bunter 34 will engage thelatch finger as'the laymoves into its forward position. Thus, thedepending arm 26 will be swung rapidly in a clockwise direction andcauses the transferrer 22 to be swung rapidly downwardly to move afilling carrier 20 out of a seat I6 in the disk VM and down intoengagement withthe empty or substantially empty with particularreference to the accompanying filling carrier 20, and forcing said lastmentioned filling carrier out of the shuttle. As the lay begins itsrearward movement, the transferrer begins to move upwardly under theinfluence of the spring 42. The feed pawl 38 moves with the transferrerand rotates the disk l4 ina direction to move the next filling carrier20 into transferring posi-' tion.

The parts described above are of usual construction and operate at thehigh speeds usual in modern high speed looms. The transferring of thespring 42 is not sufiicient to prevent overthrow and, consequently, theworn parts must be replaced. v

Downward movement of the transferrer 22 is limited in the presentconstruction by a resilient member 44 which is secured to thetransferrer. 22 and engages the top surface of the front box plate 46 ofthe right hand shuttle box. The

transferrer 22 is provided with a ledge or shelf 48 which is providedwith a threaded opening 50. The resilient member 44 comprises a block 52-formed of rubber or othersuitable resilient material which is bonded tothlower face of a disk 54 and-which is provided with an upwardly ex-"tending threaded shank'56 threaded into the opening 50. The resilientmember is locked in adjusted position on the transferrer by the washerand locknutlifl,

The resilient'stop member 44 acts not only to cushion the stopping ofthe transferrer 22 but also acts to aid in the return'of the transferrer22 to its initial position; The resilient stop member is assembled'onthe transferrer 22 and is so adjusted that the block 52 is compressedagainst the top'of the front box plate 46 to an extent sufiicient toovercome the pressure of the transferrer and to stop the transierrer inthe proper positionfWhenthe lay begins its rearward movement,the'pressure on the transferrer is released and the expansion of therubber stop member 44 initiates the'feeding movement of the feed pawl38.

, torsion spring "can be reduced which will re- Consequently, thetension of the duce wear on the feed pawl and the teeth of the riersfrom the holder, a spring for moving the transferrer in the otherdirection, a stop, and

resilient means carried by the transferrer and -arranged to engage thestop, as the transferrer approaches 'm'ent.

2.In a filling replenishing loom, a holder for the limit of itstransferring moveaseries of filling carriers, a transferrer movableholder fora series of filling carriers, a reciproto transfer successivefilling carriers from the holder, a member adjustably secured to thetransferrer, and a resilient member fixed to the adjustable member andarranged to resist movement of the transferrer during only the latterportion of its transferring movement.

.3, Inna, filling replenishing loom, a holder for 1a series o f ;fi1lingcarriersja transferrer mounted for movement to transfer successivefilling carriers from the holder, a shuttle box, and adjustableresilient means mounted on the transferrer and arranged to engage theshuttle box as the transferrer approaches the end of its transferringmovement to limit the movement of the transferrer.

the transferrer, and a resilient pad fixed to said adjustable means andarranged to engage the front box plate of the shuttle box as thetransfe'rrer approaches the end of its transferring 'movement to limitthe movement of the transf errer.

5. In a filling replenishing loom, a rotatable holder for a series offilling carriers, a reciprocating lay having a shuttle box on one endthereof adjacent said holder, a fiy shuttle received in said shuttlebox, a transferrer mounted for movement to transfer successive fillingcarriers from said holder to said shuttle when the supply of fillingon-the filling carrier in the shuttle is substantially exhausted,adjustablemeans mounted on the transferrer, and a resilient'member fixed'to said adjustable member and arranged to engage said shuttle box asthe transferrer approaches the end of its transferring movement. 6.. Ina, filling replenishing loom,- a rotatable eating lay, a shuttle box onthe end of said lay adjacent said rotatable holder, a shuttle aranged tobe picked across said lay and into said shuttle box, a transferrerassociated With said holder and-mounted for movement to transfersuccessive filling carriers from said holder to said shuttle when thesupply of filling on the filling .carrier in the shuttle issubstantially exhausted,

sition, and a resilient rubber cushion fixed tosaid -member and arrangedto engage the front wall ofxsaid shuttle box as the transferrerapproaches the end of-its transferring movement to limit the movementthereof.

